Internal combustion engine



1936; R. M. BRASINGTON 2,050,731

INTERNAL COMBUST ION ENGINE Filed 001;. 29, 1932 4 Sheets-Sheet l Invenlor 1 MuBwasz'ny ion Aug. 11, 1936. BRASINGTON 2,050,781

INTERNAL COMBUSTION ENGINE Filed Oct. 29, 1932 4 Sheets-Sheet 2 Q Q Q Q o r u o I o N \h s o in .m w

N Q R N Inventor Aug. 11, 1936. R. M. BRASINGTON INTERNAL COMBUSTION ENGINE Filed Oct. 29, 1932 4 Shets-Shet-E- A In mm [of 7?) M.Brasz n7%on /I Home y Aug. 11, 1936.

R. M. BRASINGTON INTERNAL COMBUSTION ENGINE Filed 001;. 29, 1932 4 Sheets-Sheet 4 flilorney Patented Aug. 11, 1936 INTERNAL COMBUSTION ENGINE Ross M. Brasington, Marietta, Ohio Application October 29, 1932, Serial No. 640,270

1 Claim.

This invention relates to an internal combustion engine, the general object of the invention being to provide a number of sets of cylinders, each cylinder containing two pistons, and a single crank shaft to which the pistons are connected in such a manner that the pistons of each cylinder move in opposite directions, so that one piston will exert a pull on the crank shaft while the companion piston is exerting a push thereon and vice versa, thus supplying a steady flow of power to the crank shaft without vibration.

Another object of the invention is to provide a firing chamber for each cylinder which is in communication with the middle part of the cylinder and contains the inlet and exhaust valves so that the explosive action in each cylinder acts to force the pistons therein apart.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing the invention in detail reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure 1 is an elevation of the invention.

Fig. 2 is a vertical sectional view through one set of cylinders.

Fig. 3 is an enlarged fragmentary sectional view showing how the castings containing the valves and the firing chamber communicate with the middle part of a cylinder.

Fig. 4 is a section on line 4-4 of Fig. 3.

Fig. 5 is a top plan view with some of the cylinders in section.

Fig. 6 is a transverse sectional View through one of the cylinders.

Fig. 7 is a view of one of the cross heads.

In these drawings, the numeral l indicates a base to which the inner and outer substantially semi-circular supporting members 2 are connected. These members support the cylinders 3 which are radially arranged as shown and while the drawings show two sets of these cylinders it will of course be understood that I do not wish to be limited to the number of sets of cylinders used.

Bearing members 4 are arranged on the supporting member I in the space formed by the inner member 2 and the crank shaft 5 is journalled in these members 4. This crank shaft is formed with three cranks for each set of cylinders and each crank carries a substantially semi-circular member 6 having a cap not shown detachably connected to its flat side for connecting it to the crank shaft, and this member 6 is formed with a peripheral groove 8 for receiving the ends of the connecting rods 9 which are pivotally connected with the member 6."

Each cylinder contains a pair of pistons I0 and both ends of each cylinder are open. The inner pistons ID of each set of cylinders are connected to the central crank and the outer pistons M are each connected by a rod H with a cross head l2 at the outer end of each cylinder, and each cross head is connected at its ends to a pair of guide rods I3, guided in the brackets l4, attached to the outer walls of the cylinder, and these rods l3 are pivotally connected as shown at l3 to the connecting rods 9', these connection rods 9' being connected with the members 6 carried by the other two cranks of the crank shaft, as clearly shown in Fig. 5.

A casting i5 is attached to the middle part of each cylinder and is formed with a combustion chamber l6 which is in communication with the middle part of the cylinder and with an exhaust chamber ll also in communication with the middle part of the cylinder. The casting is also formed with a chamber I8 which is in communication with the chamber l6 through a port controlled by a valve i9 and with a chamber which is in communication with the chamber i'l through a port controlled by a valve 2|.

Each chamber I8 is connected to an intake manifold or pipe 22 connected with a carbureter 23 and each chamber 20 is connected to an exhaust manifold 24. A spark plug 25 may be used for firing explosive mixture at the point where chamber [6 communicates with a cylinder though if desired the pistons I0 can be caused to compress the mixture to so high a degree as to produce ignition of the mixture.

A shaft 26 is rotatab-ly arranged on the base I and is driven from the shaft 5 through means of the gearing 21 and the timer 28 is operated from said shaft 26 as shown in Fig. 5. This shaft 26 carries a set of four cams or eccentrics 29 for the valves of each set of cylinders.

The drawings show these members as cams, and these cams engage the rollers 30 on the inner ends of the rods 3! which are slidably supported by the guides 32 and the outer ends of these rods are provided with the adjusting screws 33 engaging the outer ends of the stems of the valves I9 and 2| which are. normally held in closed position by the springs 34. Light springs may be placed on the rods 3| to hold them against the valve stems.

The arrangement of cylinders shown, being in a half circle, gives much more room between the cylinders and leaves plenty of space for air cooling, though if desired, a liquid cooling system may be used.

By adjustably connecting the cross heads I2 to the rods of pistons, the outer pistons can be adjusted as desired.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be lmderstood that changes may be made in the construction and in the combination and arrangement of the several parts provided that such changes fall within the scope of the appended claim.

Having thus described my invention, what I claim as new is:

In an internal combustion motor, a cylinder, an elongated casting having one end connected to a side portion of the cylinder and containing elongated inlet and exhaust passages extending longitudinally of the casting and arranged parallel to each other and each having its inner end opening into the cylinder, a spark plug having its inner end located at the point where the inlet passage communicates with the cylinder, the exhaust passage having a right angular outer end which extends along the outer end wall of the inlet passage, said casting having an inlet chamber and an outlet chamber arranged at one side thereof and said casting having a pair of ports, one connecting the inlet chamber with the outer end of the inlet passage and the other connecting the exhaust chamber with the right angular extension of the exhaust passage, an inlet pipe connected with the inlet chamber, an exhaust pipe connected with the exhaust chamber, said pipes extending from the same side of the casting, inlet and exhaust valves controlling the ports, the stem of the inlet valve passing laterally through the outer end of the inlet passage and through a side wall of the casting which is arranged at right angles to that side wall to which the pipes are connected, the stem of the exhaust valve passing laterally through the extension of the exhaust passage and through the same wall of the casting through which the stem of the inlet valve passes, said stems being parallel to each other and means for operating the valves.

ROSS MQ BRASINGTON. 

